
#include <shareptr>


int main(){
// Use make_shared function when possible.
auto sp1 = make_shared<Song>(L"The Beatles", L"Im Happy Just to Dance With You");

// Ok, but slightly less efficient. 
// Note: Using new expression as constructor argument
// creates no named variable for other code to access.
shared_ptr<Song> sp2(new Song(L"Lady Gaga", L"Just Dance"));

// When initialization must be separate from declaration, e.g. class members, 
// initialize with nullptr to make your programming intent explicit.
shared_ptr<Song> sp5(nullptr);
//Equivalent to: shared_ptr<Song> sp5;
//...
sp5 = make_shared<Song>(L"Elton John", L"I'm Still Standing");

}
